Hoaglund C M, Thomas V M, Petersen M K, Kott R W
Animal and Range Science Department, Montana State University, Bozeman 59717.
J Anim Sci. 1992 Jan;70(1):273-80. doi: 10.2527/1992.701273x.
Two experiments were conducted to evaluate effects of supplemental protein source and ME intake (Exp. 1) on ewe nutritional status during pregnancy. Forty-two mature Targhee ewes were allotted randomly in Exp. 1 to one of six treatments (n = 7) using a 2 x 3 factorial arrangement. Ewes were individually fed chopped barley straw and supplements containing either urea (U), soybean meal (SBM), or blood meal (BM) plus SBM during the 84-d experiment. Straw and supplement intakes were adjusted to meet either 80 or 100% of ME requirements. In Exp. 2, 30 pregnant Targhee ewes that were allotted randomly to one of three groups (n = 10) were individually fed protein supplements similar to those in Exp. 1 and had group access to long-stem barley straw. In Exp. 1, ewes fed BM + SBM gained more (P less than .05) weight, lost less (P less than .05) body condition, and had increased (P less than .05) wool fiber length compared with ewes fed U; SBM ewes were intermediate (P less than .05) in response. Ewes fed BW + SBM had increased (P less than .05) blood urea N and albumin concentrations compared with ewes fed U. Metabolizable energy intake did not affect (P greater than .05) ewe performance or serum metabolite concentrations. Ewes fed BM + SBM in Exp. 2 gained more (P less than .05) weight than ewes fed either SBM or U, and ewes fed SBM lost less weight (P less than .05) than ewes fed U.(ABSTRACT TRUNCATED AT 250 WORDS)
进行了两项试验以评估补充蛋白质来源和代谢能摄入量（试验1）对妊娠母羊营养状况的影响。在试验1中，42只成年塔吉母羊采用2×3析因设计随机分配到6种处理之一（n = 7）。在为期84天的试验期间，母羊单独饲喂切碎的大麦秸秆，并分别补饲含尿素（U）、豆粕（SBM）或血粉（BM）加豆粕的补充料。秸秆和补充料的采食量调整为满足代谢能需要量的80%或100%。在试验2中，30只妊娠塔吉母羊随机分配到3组之一（n = 10），单独饲喂与试验1相似的蛋白质补充料，且每组母羊可自由采食长茎大麦秸秆。在试验1中，与补饲U的母羊相比，补饲BM + SBM的母羊增重更多（P < 0.05），体况损失更少（P < 0.05），羊毛纤维长度增加（P < 0.05）；补饲SBM的母羊反应介于二者之间（P < 0.05）。与补饲U的母羊相比，补饲BW + SBM的母羊血尿素氮和白蛋白浓度增加（P < 0.05）。代谢能摄入量对母羊生产性能或血清代谢物浓度无影响（P > 0.05）。在试验2中，补饲BM + SBM的母羊比补饲SBM或U的母羊增重更多（P < 0.05），补饲SBM的母羊比补饲U的母羊体重损失更少（P < 0.05）。（摘要截短至250字）
